Adele feared she would never finish her new album "25" after her team told her: “It’s not good enough.”
The singer, 27, admitted she “wanted to give up” and scrapped an entire record based on becoming a mother to Angelo, three, as she debuted her hugely-anticipated single "Hello" Friday morning.
She said: “I felt like this was never going to happen. I felt I was never going to finish this record.
“I wanted to give up a lot because I couldn’t do it and I thought I’d run out of ideas and lost my ability to write a song.
“My team around me are very honest. They were like, ‘It’s not good enough. Go back to the drawing board’. It is such a relief because it’s been a really long time coming.”
She added to Nick Grimshaw on the Radio 1 Breakfast Show: “I wrote a lot of songs that didn’t make the album because they simply weren’t good enough and I didn’t believe myself in them.
“My confidence was really getting knocked by myself...I did pretty much write an album about being a mum, but that’s pretty boring, so I scrapped that.”
Adele also told Chris Evans on Radio 2 that she had regrets about not retiring after the “phenomenon” of her last record 21.
She said: “A couple of times I thought I’d dried up, yeah. Maybe I should just go out on a high.
Their chat was marred by an awkward moment where Chris, 49, mistook Adele for Beyonce, 34, by asking about the Drunk In Love singer’s alter-ego Sasha Fierce.
Opening up about her “very intimate” track Hello, Adele revealed: “A lot of stuff in my life has changed and I found myself yearning for my past for no reason other than it had gone and I missed elements of it.
“It’s about everyone that I love and I miss those people. It’s not that we’ve fallen out or anything, it’s just we’ve all got our own lives going on.”
Adele referred to Angelo’s father Simon Konecki as her “boyfriend”, confirming they have patched things up after The Sun on Sunday revealed he quit their family home in December.
Admitting she thought her surprise advert teasing Hello on Sunday had “backfired”, she explained: “I don’t have Twitter. I don’t have the password.
“So when I went onto search and put my name in there were three tweets and I was like, ‘I’ve missed my window. It’s irrelevant’. My boyfriend was like, ‘Don’t worry about it, there was loads’.”
She also named Simon, 41, as one of a handful of loved ones she can trust with secrets about her music.
Adele, who revealed she has given up smoking after her vocal cord surgery in 2011, also said that she wants to go on a world tour following the release of 25 - if she can overcome her loneliness.
She said: “There’s something quite lonely about going on stage in front of loads of people and then everyone going home.
“I would love to think I have it in me to do one of those global tours. Whether I do or not, I don’t know. We haven’t made any firm plans. It would have to be quite soon.”
During an appearance on Heart, Adele claimed that she won’t name her future albums after her age.
“I think this will be my last age one now I think. After a while it is a bit, ‘Oh she is getting a bit old’. It’s best to end of a youngish age.”
She added: “This was the hardest one for me to make but I’m very proud of it. I couldn’t have done better.”